The Global Volcanism Program has no activity reports for Tunkin Depression.

The Global Volcanism Program has no Weekly Reports available for Tunkin Depression.

The Global Volcanism Program has no Bulletin Reports available for Tunkin Depression.

Volcano Types

Volcanic field

Tectonic Setting

Rift zoneContinental crust (> 25 km)

Rock Types

Major
Trachybasalt / Tephrite Basanite
Basalt / Picro-Basalt

Population

Within 5 kmWithin 10 kmWithin 30 kmWithin 100 km

431
431
6,533
63,490

Geological Summary

The Tunkin Depression volcanic field (also known as the Tunka Depression) covers a broad area immediately west of the SW tip of Lake Baikal. The Khobok group of basaltic cinder cones near the village of Tunka, one of five groups of cinder cones characterized by some sources as late-Pleistocene to Holocene in age, has the largest concentration of vents. Drill cores show that the upper 500 m of the basin is filled with Quaternary tuffs and a dozen lava flows; subsidence continues, partially burying volcanic features. Other well-preserved cinder cones of probable Pleistocene age are located to the SE in the Khamar-Dayan Range. The youngest cinder cones and lava flows are in the NE part of the Tunkin Depression. The age of the latest eruptions has variously been considered to be Pleistocene-to-Holocene or late-Pleistocene.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Synonyms

Tunka Depression

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Khara-Boldok
Ulyaborskiy

Cone

Khobok Group

Cone

Kovrizhka

Cone

Kutinsky Group
Kutinskaya Group

Cone

Podgorny

Cone

Svyashchennaya

Cone

Talaya Group

Cone

Photo Gallery

The ice-covered SW end of Lake Baikal cuts across this NASA Space Shuttle image. The snow-free lowlands west of the lake are partially occupied by the Tunkin Depression volcanic field, which covers a broad area west of the lake. The volcanic field (also known as the Tunka Depression) contains five groups of late-Pleistocene to Holocene cinder cones and lava flows, some of which are partially buried by sediments in the subsiding depression. The Angara River (top-center) flows from the NE into Lake Baikal.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).